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Rework automatically acquired OPFS locks to be released during idle time. This eliminates the performance hit reported in [46304ba057707c].

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FossilOrigin-Name: a7fe91afca473fe55c983bc81d214df4ef3699863c7423fa4b6b9cde23d6a3b4
This commit is contained in:
stephan
2022-11-10 13:14:30 +00:00
parent aafa022f5b
commit da2641597a
5 changed files with 71 additions and 38 deletions
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7
ext/wasm/api/sqlite3-api-opfs.js
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@ -467,9 +467,11 @@ const installOpfsVfs = function callee(options){
/**
Returns an array of the deserialized state stored by the most
recent serialize() operation (from from this thread or the
counterpart thread), or null if the serialization buffer is empty.
counterpart thread), or null if the serialization buffer is
empty. If passed a truthy argument, the serialization buffer
is cleared after deserialization.
*/
state.s11n.deserialize = function(){
state.s11n.deserialize = function(clear=false){
++metrics.s11n.deserialize.count;
const t = performance.now();
const argc = viewU8[0];
@ -494,6 +496,7 @@ const installOpfsVfs = function callee(options){
rc.push(v);
}
}
if(clear) viewU8[0] = 0;
//log("deserialize:",argc, rc);
metrics.s11n.deserialize.time += performance.now() - t;
return rc;